Coach Withus is in her 24th season at the helm of the Old Dominion men's and women's swimming and diving programs. She remains one of a very small handful of women in the nation who coach both the men's and women's programs on the Division I level.

During the 2015-16 season, Withus helped Reed Mathews to school records in the 100 and 200 fly as Mathews qualfied for the NCAA Championships and finished is ODU career with a 17th place finish in the 200 fly at the NCAA Championships.

In the 2014-15 season, Withus led the Monarch men's squad to a second place finish at the Conference USA Championships and was named C-USA Coach of the Year.

The 2013-14 season saw Withus help Sidni Hoxha to three Conference USA first place finishes and a berth to the NCAA Championships.

During the 2012-13 season, Withus helped men’s swimmer Sidni Hoxha earn CAA Swimmer of the Year. Under her guidance, Hoxha qualified for the NCAA Championships where he competed in the 50 and 100 free. At the 2013 CAA Championships, Withus’ squad set an astonishing 15 school records and won 13 medals. Lady Monarch Kimberley Rashleigh secured six gold medals while Hoxha was named Co-Most Outstanding Swimmer of the Meet. Outside the pool, Withus’ Lady Monarchs achieved Scholar All American status for the Fall 2012 semester.

Withus has earned the CAA Coach of the Year honor four times, including garnering the award in 2006 season on the men's side. She also guided the 1997-98 men's team to a perfect 12-0 record and it's first ever CAA Championship. The men's squad in 2008 also capped off a perfect season with a 10-0 record.

Withus has also coached the most prolific swimmer in CAA history, Mary Kay Bolduc, who became the first athlete (male or female) to win four CAA Swimmer of the Year honors (1995-99). Former Monarch Kara Fichtorn won the same title during her tenure (1999-03) with the team, giving Old Dominion and Withus the honor of having the CAA's best female swimmer in five of the last nine years. More recently, Withus coached the 2009 CAA Men's Swimmer and Rookie of the Year and 2008 Icelandic Olympian in Arni Arnason. Arnason was chosen as the 2011 CAA Men's Swimmer of the Year and the 2011 CAA Championship's Most Outstanding Swimmer. In 2012, Arnason swam the 50-meter freestyle for Iceland in the 2012 Olympic Games in London. Withus has also coached another two-time Olympian in current ODU swimmer, Sidni Hoxha. Hoxha swam the 50 freestyle for his native country, Albania, in the 2008 Olympic Games in Beijing. In 2010, Hoxha was named the CAA Rookie of the Year. One year later, Hoxha competed in the 2012 Olympic Games in London for the 100 freestyle.

Before beginning her Old Dominion career, Withus was the head women's coach at New York University, where she compiled a 55-12 record. She coached eight NCAA All-Americans, was named Coach of the Year by the Metropolitan Conference in 1992 and took second in the Metropolitan Conference Championships with a 10-1 record during her final year at NYU.

A native of White Plains, NY, Withus graduated from Adelphi University in 1985 with a degree in physical education. She received her master's degree in physical education from Ohio University in 1986.

Carol and her husband John currently reside in Virginia Beach, Virginia with their two daughters, Caroline and Catherine.